Fountain-pen.



PATENTED MAY 26, 1908.

W. F. BARRETT. FOUNTAIN PEN.

APPLIOATION FILED rm. 1a, 1908.

Wine 7% UNITED STATES PATENT OFFICE.

WILLIAM F. BARRETT, OF CHICAGO, ILLINOIS.

FOUNTAIN-PEN.

To all whom it may concern:

'Be it known that 1, WILLIAM F. BARRETT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Fountain Pens, of which t ie following is a specification.

My im roved fountain pen consists in part of an in reservoir forming a art of the fountain pen, composed essentia 1y of transparent, translucent, or sufliciently transparent material to enable the writing fluid therein to be readily observed and the exact level ascertained at any and all times.

The primary object of my invention is, to construct a fountain pen in such manner that the same may be readily filled with writing fluid, that all leakage or overflow, when not in use, or in the pocket, will be eliminated, even though carried upside down, or when subjected to undue ar, shaking, or shock of the severest character.

Another object is to coat the interior of the reservoir body with a suitable hydro-carbon grease, preferably vaseline, which serves the following purposes: to increase the transparency of the reservoir and to render the ink surface of the reservoir less susceptible to being coated with the ink or writing fluid.

The invention consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of my improved fountain pen when not in use; Fig. 2 a vertical section thereof with the ink supply shut off Fig. 3 a similar view to Fig. 2, with the cap removed and the ink su ply opened; Fig. 4 a transverse section, ta en on line 44 of Fig. 2, looking in the direction of the arrow; Fig. 5 a transverse section, taken on line 55 of Fig. 2, looking in the direction of the arrow; Fig. 6 a side elevation of the movable feed section; Fig. 7 a side view of the fluid supply plug; and Fig. 8 a sectional detail of the end plug.

My improved fountain pen comprises, preferably, an elongated tubular ink reservoir 8, made of celluloid or other suitable-material of a transparent, translucent, or sufficiently trans arent nature to enable the user to readi y determine the exact amount of writing fluid therein. At the upper end of the ink reservoir 8 is a threaded o ening adapted to permit writing fluid 9 to o'w therethrough, said fluid being securely retained within the reservoir by means of an end plug 10, which Specification of Letters Patent.

Application filed February 18, 1908. Serial No. 416,566.

Patented May 26, 1908.

12 opening near the shoulder provided bythe enlargedmilled head, which arrangement affords an air duct that will remain open during the screwing up of the plug 10 until the final turn which brings the air vent opening inside of the reservoir body and brings the milled head into contact with the end of the tube, thereby sealing the orifice. Formed integral with this tubular reservoir body 8, and at or near its lower end, is a cross wall 14, having an annular opening 15 drilled through its center, said 0 ening permitting an ink supply plug 16 to e inserted therethrough. This ink sup ly plug has, at its upper end, a round heag 17, formed With a cross slot 18 on its upper face, its end having therein, in this instance, left handed threads. Within the stem of the ink supply plug 16 is formed a central ink supply passage or channel 19, which communicates with a lateral passage 19 opening from the side of the plug.

The central passage 19, as shown, is in direct end of the periphery of this movable feed section 20 are right hand threads 21. The movable feed section is recessed at its u per end, as at 22, to receive the lower threadbd end of the fluid supply plug 16. The lower end of the movable feed section is adapted to receive and retain a writing pen and feed 23, of the usual type, said feed being in direct communication with the supply passage or channel 19. A cap 24, of any suitable construction, is ada ted to protect the pen, when not. in use, and is adapted to be removed therefrom and positioned upon the upper end of the reservoir body, as indicated in the drawings.

From the foregoing description, it is a parent that by turning the movable fee sec tion in one direction brings the passage 19' of the fluid supply plug 16 into the position indicated in Fig. 2, said passage being closed by contacting the face of the opening 15 in.

the cross wall 14, thereby arresting the flow of ink. By turning the movable feed section in the opposite direction raises the movable feed section 20 and with it the su ply plug 16, moving the assage 19 awayfiom contact with the wa of the opening 15 and into channel from the i absolutely a dent or miscalculation the pen is left in a communication with the well of the reservoir 8, thereby openin up a continuous fluid reservoir to the writing P The construction of my improved fountaTn' pen is such that the'user is enabled to enjoythe advantage of filling the pen at anyand all times, belng certain that an over supplyof ink is not filled therein and-thathnder' any and all conditions it is ossible to determine whether the ink supp y is running low and the pen needs refilling. 4

The-inner walls of the ink carryin reser-. voir being lightly coated with vase' e, as described above, makes the ink carrying reservoir almost as transparent as glass and at the same time ermits the use of a casin of nonreakable character as wel as adequate transparency.

Most important of all, however, the leak preventing. mechanism and fluidregulating device, as described herein, render the usenf this pen absolutely free from the usual worry and uncertainty in fountain pens whereby leakage or seepage of ink into the cap or pocket is practically a certainty if by accihorizontal, semi-horizontal, or upright position in the ocket or elsewhere.

What I c aim as new and desire to secure by Letters Patent is: I

1. In a fountain pen,'a transparentresen voir bodyhaving a cross Wall near its lower t end and having i a central opening therethrough, afluid supply plug having its stem" inserted through the cross wall, said plug having on its up er end a head and adjacent thereto a flui channel, anda movable feed section havin a central fluid channel therethrough attac ed to the lower end of the fluid supply plu substantially as described.

- 2. In a ountain pen, a transparent reser- J 'voir body, an opening in the upper end of the reservoir body, a cap adapted to be retained In said opening, a cross wall near the lower end of the. reservoir body having a central 7 o ening therethrough, a hollow fluid supply p ug having its sterninserted through the .cross wall, said hollowplug having on its upper end a head and adjacent thereto a fluid channel, and a movable feed section having a central fluid channelrtherethrou h attachedto the lower end of the fluid supp y plug, substantially as described.

3. A fountain pen having a reservoir body sufliciently trans arent to enable the user to readily observe t e contents, an o ening in the upper end of the reservoir bo y, a cap- 4 cross wall, said plug having, on its upper end,

having a vent opening adapted to be retained in then per end of the reservoir body, a cross wa near the lower end of the reservoir body and having a central opening there- -throughfa fluid supply plug having its stem -inser'ted through t having on its upper end a head and adjacent e' cross wall, said stem thereto afluid channel, and a movable feed section having a central fluid channel there- .throughattached to the lower end of the fluid supply plug, substantially as described.

4. A fountain pen having a reservoir body sufliciently trans arent to enable the user to readily observe t 'e contents and open at its up er end, the inner surface of the reservoir bo y being lightly coated with non-drying grease, a cap for the reservoir body having a vent opening therein, a cross wall near the lower end of the reservoir body having a central opening therethrough, a fluid supply plug having its stern inserted through the a head and adj acent'thereto a fluid channel,

' and a movable feed section having a central fluid channel attached to the lower end of the fluid supply plug, substantially as described. 8 5. A fountain pen havin a transparent reservoirbody, the inner suri ace of the reservoir body being lightly coated with non drying grease, a cross wall near the lower end of the'reservoir body having a central opening therethrough, a fluid supply plug havin its stem insertedthrough the cross wall, said plug having on its up er end a head, and

adjacent thereto a flur channel, and a movable feed section having a central fluid chan- 9 .nel attached to the lower end of the fluid supply plug, substantially as described.

6. A fountain pen having a transparent reservoir body, the inner surfaces of the reservoir body being lightly coated with nonl drying grease, a cap for the reservoir bod v having a vent opening therein,- a cross wall near the lower end .of the reservoir body having a central opening therethrough, a hollow fluid supply plug having its stem inserted-through the cross wall, said'hollow plug having on its upper end a head and adjacent thereto a fluid channel, and a mm able feed section having a central fluid chair nelattached to the lower end of the fluid supply plug-substantially as described.

, WILLIAM F. BARRETT.

Witnesses: WALKER BANNING, PIERsoN W. BANNING. 

